Connecting through ModemConnecting through a LAN
Connecting through high-speed lines
1 Connecting through a Modem
You can connect to the Internet through modem. In this way, serial data communication port and dial-up utility program is used. Most of the individual users connect to the Internet by using a telephone line, a modem of 56 Kbps and a SLIP (Serial Line Interface Protocol) or PPP (Point—to—Point Protocol) account. Most of the ISP companies provide these types of connections for home users and businesses. When you connect to the ISP’s server computer by dialing through a telephone number, you have to give your username, password provided by that ISP Company.
2. Connecting through a LAN
You can connect to the Internet through a LAN, if LAN uses TCP/IP protocols and has an Internet connection. This type of connection is commonly used by business to provide the LAN’s users with Internet access. Actually, the computer on the LAN connects to the Internet. through a router. If the LAN uses a different kind of protocol then a gateway is used to convert that protocol to and from TCP/IP.
3. Connection through High Speed Lines
The data accessing speed of modem connection is very slow. It fine to access text data but it is not suitable to access graphics files or data like audio and video. Today connections of dedicated high-speed lines are available from different telephone companies, cable 1W services etc. You can access data with very high speed, i.e., 20 or more times faster by using fiber optics, microwaves, satellites etc.
You can connect to the Internet through modem. In this way, serial data communication port and dial-up utility program is used. Most of the individual users connect to the Internet by using a telephone line, a modem of 56 Kbps and a SLIP (Serial Line Interface Protocol) or PPP (Point—to—Point Protocol) account. Most of the ISP companies provide these types of connections for home users and businesses. When you connect to the ISP’s server computer by dialing through a telephone number, you have to give your username, password provided by that ISP Company.
2. Connecting through a LAN
You can connect to the Internet through a LAN, if LAN uses TCP/IP protocols and has an Internet connection. This type of connection is commonly used by business to provide the LAN’s users with Internet access. Actually, the computer on the LAN connects to the Internet. through a router. If the LAN uses a different kind of protocol then a gateway is used to convert that protocol to and from TCP/IP.
3. Connection through High Speed Lines
The data accessing speed of modem connection is very slow. It fine to access text data but it is not suitable to access graphics files or data like audio and video. Today connections of dedicated high-speed lines are available from different telephone companies, cable 1W services etc. You can access data with very high speed, i.e., 20 or more times faster by using fiber optics, microwaves, satellites etc.
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